Basic parameters, working principle and purpose:

DBF-1A~20A pull-out free tripping single-phase circuit breaker products work on the principle of bimetallic electric thermal tripping and have temperature compensation structure, which can be used in a wide temperature range. Circuit breakers not only provide overload and short-circuit protection for power lines or electrical equipment, but also have the function of monitoring the on/off status of products.

Basic parameters:

Environmental adaptability

• Surrounding medium temperature: (-55~85) ℃

• Random vibration: frequency range (15-2000) Hz, functional test value W₀=0.076g²/Hz

• Acceleration: 10.5g

• Impact: 15g technical requirement

Overload current and action time:

Extreme action current

At 25 ℃, the maximum holding current of the product is 115% of the rated current, and the minimum tripping current is 150% of the rated current

At 85 ℃, the maximum holding current of the product is 100% of the rated current, and the minimum tripping current is 150% of the rated current

-At 55 ℃, the maximum holding current of the product is 115% of the rated current, and the minimum tripping current is 160% of the rated current

Inverse time characteristic curve

life

5000 working cycles of resistive load; Inductive load with 2500 working cycles, COS φ=0.6~0.7.